Soil structure - carbon relations of differently textured and managed arable soils subjected to mechanical loading:
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1. Verfasser: | |
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Format: | Abschlussarbeit Buch |
Sprache: | English |
Veröffentlicht: |
Kiel
Inst. für Pflanzenernährung und Bodenkunde der Christian-Albrechts-Univ. zu Kiel
2013
|
Schriftenreihe: | Schriftenreihe / Institut für Pflanzenernährung und Bodenkunde, Universität Kiel
99 |
Schlagworte: | |
Online-Zugang: | Inhaltsverzeichnis |
Beschreibung: | Zsfassung in dt. und engl. Sprache |
Beschreibung: | IX, 136 S. Ill., graph. Darst. |
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245 | 1 | 0 | |a Soil structure - carbon relations of differently textured and managed arable soils subjected to mechanical loading |c vorgelegt von Anneka Mordhorst |
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Datensatz im Suchindex
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adam_text | Titel: Soil structure - carbon relations of differently textured and managed arable soils subjected to mech
Autor: Mordhorst, Anneka
Jahr: 2013
TABLE OF CONTENT
LIST OF TABLES.....................................................................................................................................................IV
LIST OF FIGURES....................................................................................................................................................V
T.IST OF ABBREVIATIONS AND SYMBOLS...................................................................................................VIE
1 GENERAL INTRODUCTION...........................................................................................................................1
2 LITERATURE OVERVIEW..............................................................................................................................4
2.1 Role of soil structure for SOC stabilization...............................................................
2.1.1 Soil aggregation and stabilization processes....................................................
2.1.2 Aggregate hierarchy concept............................................................................
2.1.3 Physico-chemical gradients in aggregates........................................................
2.2 Effect of soil management on SOC sequestration......................................................
2.3 Pore system changes due to mechanical loading and consequences on CO} effluxes
2.3.1 Soil compressibility under static and repeated stress applications....................
2.3.2 Changes in CO2 flux due to mechanical loading..............................................
3 OBJECTIVES....................................................................................................................................................19
3.1 References.....................................................................................................................................................................22
PUBLICATIONS
4 INFLUENCE OF HYDRAULIC AND MECHANICAL STRESSES ON CYCLIC
DEFORMATION PROCESSES OF A STRUCTURED AND HOMOGENIZED SILTY LUVIC
CHERNOZEM...................................................................................................................................................30
4.1 Abstract.........................................................................................................................................................................30
4.2 Introduction...................................................................................................................................................................30
4.3 Material and Methods...................................................................................................................................................32
4.3.1 Sampling of undisturbed soil...............................................................................................................................32
4.3.2 Homogenized soil samples..................................................................................................................................33
4.3.3 Cyclic loading lest...............................................................................................................................................33
4.3.4 Air conductivity..................................................................................................................................................34
4.4 Results..........................................................................................................................................................................34
4.4.1 Mechanical stress behavior..................................................................................................................................34
4.4.2 Hydraulic stress behavior....................................................................................................................................40
4.4.3 Relationship between cyclic compressibility and pore water pressures...............................................................43
4.5 Discussion.....................................................................................................................................................................46
4.5.1 Mechanical stress behavior..................................................................................................................................46
4.5.2 Coupled hydraulic and mechanical processes under cyclic loading....................................................................47
4.6 Conclusions...................................................................................................................................................................49
4.7 References.....................................................................................................................................................................50
5 INFLUENCE OF MECHANICAL LOADING ON STATIC AND DYNAMIC C02 EFFLUX ON
DIFFERENTLY TEXTURED AND MANAGED LUVISOLS.....................................................................53
5.1 Abstract.........................................................................................................................................................................53
5.2 Introduction...................................................................................................................................................................54
5.3 Material and Methods...................................................................................................................................................56
5.3.1 Soil Sampling......................................................................................................................................................56
5.3.2 Standard laboratory methods...............................................................................................................................56
1 ADLC ur 1 Ci l X
5.3.3 C02 efflux in a static flow system.......................................................................................................................56
5.3.4 COj efflux in a dynamic open flow system.........................................................................................................57
5.3.5 Air conductivity..................................................................................................................................................58
5.3.6 Bulk density, total porosity and air capacity.......................................................................................................58
5.3.7 Tensile Strength of aggregates............................................................................................................................58
5.3.8 Statistical analysis...............................................................................................................................................59
5.4 Results..........................................................................................................................................................................59
5.4.1 Management- and site-specific pore space properties.........................................................................................59
5.4.2 Management-specific mechanical stability..........................................................................................................60
5.4.3 Changes in physical properties due to mechanical loading.................................................................................62
5.4.4 Changes in C02 efflux due to mechanical loading..............................................................................................65
5.5 Discussion.....................................................................................................................................................................70
5.5.1 Management-specific physical properties and changes.......................................................................................70
5.5.2 Changes in static CC^ efflux due to mechanical loading.....................................................................................71
5.5.3 Changes in CC^ efflux during mechanical loading (GaFloCoD).........................................................................74
5.5.4 CCh efflux affected by management-specific structural properties.....................................................................75
5.6 Conclusions...................................................................................................................................................................77
5.7 Acknowledgements.......................................................................................................................................................77
5.8 References.....................................................................................................................................................................78
6 DEGRADATION EFFECTS ON ORGANIC CARBON AND MECHANICAL STRENGTH
WITHIN AGGREGATES FROM A STAGNIC LUVISOL DEPENDING ON TILLAGE
INTENSITY.......................................................................................................................................................82
6.1 Abstract.........................................................................................................................................................................82
6.2 Introduction...................................................................................................................................................................83
6.3 Material and Methods...................................................................................................................................................84
6.3.1 Sampling and fractionation of aggregates...........................................................................................................84
6.3.2 Soil Aggregate Erosion (SAE)............................................................................................................................84
6.3.3 Tensile Strength of aggregates............................................................................................................................85
6.3.4 Soil organic carbon and total nitrogen.................................................................................................................85
6.3.5 Statistical analyzes..............................................................................................................................................85
6.4 Results..........................................................................................................................................................................85
6.4.1 SOC distribution across aggregate size classes and depths.................................................................................85
6.4.2 SOC distribution within aggregates.....................................................................................................................86
6.4.3 Total nitrogen and C/N ratio within 12-20 mm aggregates.................................................................................87
6.4.4 Aggregate density within aggregates and aggregate size classes............................................................88
6.4.5 Aggregate strength within aggregates and aggregate size classes.......................................................................88
6.4.6 Interactions between physical and chemical parameters.....................................................................................90
6.5 Discussion.....................................................................................................................................................................92
6.5.1 Tillage effects on SOC distribution across aggregate size classes and depths.....................................................92
6.5.2 SOC distribution within aggregates depending on tillage intensity.....................................................................93
6.5.3 Ullage effects on aggregate strength...................................................................................................................97
6.5.4 Interactions between organic carbon and aggregate strength..............................................................................98
6.6 Conclusions.................................................................................................................................................................100
6.7 Acknowledgement......................................................................................................................................................100
6.8 References...................................................................................................................................................................101
7 LOCALIZATION OF SOIL ORGANIC MATTER IN SOIL AGGREGATES USING
SYNCHROTRON-BASED X-RAY MICROTOMOGRAPHY-----------------------------------------------------------------105
7.1 Abstract.......................................................................................................................................................................105
7.2 Introduction.................................................................................................................................................................105
7.3 Material and Methods.................................................................................................................................................107
7.4 Results and Discussion...............................................................................................................................................109
-ii-
7.5 References...................................................................................................................................................................112
8 GENERAL DISCUSSION AND CONCLUSIONS.......................................................................................114
8.1 General understanding of scale effects........................................................................................................................114
8.2 Interactions between physical and biological soil properties as affected by mechanical loading................................116
8.2.1 Effect of structure stability................................................................................................................................116
8.2.2 Effect of soil management.................................................................................................................................118
8.3 Methodical prospects..................................................................................................................................................123
8.4 Conclusions.................................................................................................................................................................125
9 SUMMARY......................................................................................................................................................127
10 ZUSAMMENFASSUNG.................................................................................................................................129
11 REFERENCES.................................................................................................................................................131
DANKSAGUNG
LEBENSLAUF
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any_adam_object | 1 |
author | Mordhorst, Anneka 1983- |
author_GND | (DE-588)1048540944 |
author_facet | Mordhorst, Anneka 1983- |
author_role | aut |
author_sort | Mordhorst, Anneka 1983- |
author_variant | a m am |
building | Verbundindex |
bvnumber | BV041814166 |
classification_rvk | RB 10161 |
classification_tum | BIO 142d LAN 117d |
ctrlnum | (OCoLC)880848383 (DE-599)GBV778098419 |
discipline | Biologie Agrarwissenschaft Pflanzenbau Geographie |
format | Thesis Book |
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spelling | Mordhorst, Anneka 1983- Verfasser (DE-588)1048540944 aut Soil structure - carbon relations of differently textured and managed arable soils subjected to mechanical loading vorgelegt von Anneka Mordhorst Kiel Inst. für Pflanzenernährung und Bodenkunde der Christian-Albrechts-Univ. zu Kiel 2013 IX, 136 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Schriftenreihe / Institut für Pflanzenernährung und Bodenkunde, Universität Kiel 99 Zsfassung in dt. und engl. Sprache Zugl.: Kiel, Univ., Diss., 2013 Ackerboden (DE-588)4141296-5 gnd rswk-swf Bodenbiologie (DE-588)4007358-0 gnd rswk-swf Landmaschine (DE-588)4034316-9 gnd rswk-swf Kohlenstoffkreislauf (DE-588)4164552-2 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Bodenbiologie (DE-588)4007358-0 s Ackerboden (DE-588)4141296-5 s Landmaschine (DE-588)4034316-9 s Kohlenstoffkreislauf (DE-588)4164552-2 s DE-604 Institut für Pflanzenernährung und Bodenkunde, Universität Kiel Schriftenreihe 99 (DE-604)BV001898129 99 HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027259460&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
spellingShingle | Mordhorst, Anneka 1983- Soil structure - carbon relations of differently textured and managed arable soils subjected to mechanical loading Ackerboden (DE-588)4141296-5 gnd Bodenbiologie (DE-588)4007358-0 gnd Landmaschine (DE-588)4034316-9 gnd Kohlenstoffkreislauf (DE-588)4164552-2 gnd |
subject_GND | (DE-588)4141296-5 (DE-588)4007358-0 (DE-588)4034316-9 (DE-588)4164552-2 (DE-588)4113937-9 |
title | Soil structure - carbon relations of differently textured and managed arable soils subjected to mechanical loading |
title_auth | Soil structure - carbon relations of differently textured and managed arable soils subjected to mechanical loading |
title_exact_search | Soil structure - carbon relations of differently textured and managed arable soils subjected to mechanical loading |
title_full | Soil structure - carbon relations of differently textured and managed arable soils subjected to mechanical loading vorgelegt von Anneka Mordhorst |
title_fullStr | Soil structure - carbon relations of differently textured and managed arable soils subjected to mechanical loading vorgelegt von Anneka Mordhorst |
title_full_unstemmed | Soil structure - carbon relations of differently textured and managed arable soils subjected to mechanical loading vorgelegt von Anneka Mordhorst |
title_short | Soil structure - carbon relations of differently textured and managed arable soils subjected to mechanical loading |
title_sort | soil structure carbon relations of differently textured and managed arable soils subjected to mechanical loading |
topic | Ackerboden (DE-588)4141296-5 gnd Bodenbiologie (DE-588)4007358-0 gnd Landmaschine (DE-588)4034316-9 gnd Kohlenstoffkreislauf (DE-588)4164552-2 gnd |
topic_facet | Ackerboden Bodenbiologie Landmaschine Kohlenstoffkreislauf Hochschulschrift |
url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027259460&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
volume_link | (DE-604)BV001898129 |
work_keys_str_mv | AT mordhorstanneka soilstructurecarbonrelationsofdifferentlytexturedandmanagedarablesoilssubjectedtomechanicalloading |